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Goodwill and Intangible Assets Goodwill and Intangible Assets (Summary of Changes in Carrying Value of Goodwill) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Balance	$ 635	$ 635
Commercial Bank
Goodwill [Line Items]
Balance	473	473
Retail Bank
Goodwill [Line Items]
Balance	101	101
Wealth Management
Goodwill [Line Items]
Balance	$ 61	$ 61

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

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-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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